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Current conditions at
Sunnyside Municipal Airport (K1S5)
Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.
Clear
78°F
26°C
| Humidity | 56% |
| Wind Speed | ENE 4 MPH |
| Barometer | 29.92 in (1013.21 mb) |
| Dewpoint | 61°F (16°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 17 Aug 08:15 PM PDT |
Extended Forecast for
Prosser WA
Tonight
Low: 58 °F
Partly Cloudy
Tuesday
High: 94 °F
Sunny
Tuesday Night
Low: 55 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny
Wednesday Night
Low: 56 °F
Mostly Clear
Thursday
High: 95 °F
Sunny
Thursday Night
Low: 60 °F
Partly Cloudy
Friday
High: 95 °F
Partly Sunny
Friday Night
Low: 58 °F
Mostly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 58. Calm wind becoming west around 5 mph.
Tuesday
Sunny, with a high near 94. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 55. West wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 92. Calm wind.
Wednesday Night
Mostly clear, with a low around 56. Calm wind.
Thursday
Sunny, with a high near 95.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Partly sunny, with a high near 95.
Friday Night
Mostly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 89.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Prosser WA
46.21°N 119.75°W (Elev. 741 ft)
46.21°N 119.75°W (Elev. 741 ft)
3:01 pm PDT Aug 17, 2026
8pm PDT Aug 17, 2026-6pm PDT Aug 24, 2026
Additional Resources
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